Core mold for walls



Feb. 5, 1946. v. E. REICHARD CORE MOLD FOR wALLs Filed Nov. 8, L944 grwc/wtm Why/7% |||l||I| |lllIlllllll llllll llllll Ve rhe ZZZ 2e z'a/zanz Patented Feb. 5, 1946 UNITED STATES PATENT OFFICE CORE MOLD FOR WALLS Vern E. Beichard, Stinnett, Tex. v 7 Application November 8, 1944, Serial No. 562,500

Claims Thisinvention relates generally to the class of plastic block and earthenware apparatusand pertains particularly to improvements in collapsible forms.

A principal object of the present invention is,

to provide a collapsible mold form designed to be used in the construction of walls, for the formation of air spaces or passages in the walls, which is constructed in a novel manner whereby it may be easily and quickly collapsed, after the wall forming material has set, for removal from the wall.

a collapsible mold form which is of relatively simple construction but which is strong and durable and which may be economically produced.

The invention will be best understood from a consideration of the following detailed descriptiontaken in connection with the accompanying drawing forming a part of the specification, with the understanding, however, that the invention is not confined to a strict conformity with the showing of the drawing but may be changed or modified so long as such changes or modifications mark no material departure from the salient features of the invention as expressed in the appended claims.

In the drawing:

Figure 1 is a View in top plan of a portion of a wall showing, in top plan, the core mold of the present invention installed therein.

Figure 2 is a sectional view taken substantially 0n the line 2--2 of Figure 1.

Figure 3 is a view looking at the end of one of the spreader members in opened condition.

Referring now more particularly to the drawing, the numeral l0 generally designates, in top plan, a cast or poured cement wall, the material for which is introduced between spaced outside form walls II which are commonly constructed of boards maintained in proper position by posts or studding [2.

In the construction of concrete walls it is common practice to form vertical openings or passages in the central part of the wall for ventilation to prevent penetration of moisture through from the outer side to the inner side of the wall. Various types of mold forms have been devised for the-formation of such air passages, the majcrity of which are composed of a number of sections or parts and are more or less complicated and difiicult to set up.

The device of the present invention is of simple construction and can be easily and quickly placed in position and'maintained in such position until the cement for the wall has been'poured. f

'In accordance with the present invention the core mold comprises a pair of spaced, parallel relatively movable bars l3 each of which is formed longitudinally along one side to provide the substantially V-shaped rib M which is bordered at each side by a fiat shoulder I5.

The adjacent sides of the bars l3 are centrally longitudinally slotted as indicated at I6 and connecting the bars 13 together are the transverse fiat links H which have their ends disposed in nection by means of the bolt 2|, with the arm l9, 'when the bars l3 are separated the necessary distance, .As will be. readily'apparent thecoupling'links ll serveto maintain the bars l3 in proper spaced parallel relation.

As will be readily seen upon reference to Figure 1 the ribs M are oppositely directed. Coacting with each of these ribs I4 is a spreader member which is generally designated 22 and which comprises two boards 23 each having a corner beveled off or chamfered as indicated at 24. These beveled surfaces 24 of the two boards making up the spreader are designed to be brought into opposing relation and the adjacent edges of the boards are pivotally coupled together by hinges 25, Thus the boards forming the spreaders 22 are coupled for relative movement and may be disposed in V formation.

The free longitudinal edges of the boards 23 are suitably formed as indicated at 26, to abut flat against the shoulders 15 so that each spreader member when in working position against the outer side of a bar 13, straddles the adjacent rib I4.

When the longitudinal edges or edge faces 26 of the spreader unit boards are disposed against the shoulders l5 so that the inner sides of the boards 23 bear against the face of the rib M, the adjacent outer side of each board 23 will be disposed beyond the adjacent side of the bar l3. Thus when a side board 21 of the core mold is disposed in position at the sides of the bars l3, such board 21 will bear against the outer sides of the .spreader boards 23 and will .be spaced from theadgiacentsides'of the bars 13 as shown in Figure 1.

From the foregoing, it will be apparent that the outer side of the collapsible core mold is made up of the relatively wide side boards 2;! and the V-shaped spreader members 22 which are interposed between the side boards 21 and are maintained in proper spaced relation Ybyzthe finterposed ribs M of the bars [3. V

The bars 13 and the spreaders 22 will be of the same length and may be of substantiallength 'toiacilitate the'casting or forming of a wall sec tion of substantial height.

, Insetting up thewall form, the core moldparts are assembled in the relation in which they are shown mFigure 1 anda suitable-number of wires are wrapped around the assembled parts as shown, such wires being designated 28, These wires hold the parts f the core, together. The core is then set upright in ,position between the walls H and is secured in any suitable manner such as, for example, by disposing bars 29 across the top edges of the, core boards 21 and the walls H as illustrated in brokenlines in Figure I. Such bars-29 may be scrap pieces of wood and maintained in place by driving nails 30 therethrough into the underlying edges zof the walls'and boards 21, as shown. 7

After the wall material has beenpoured and has set, the core mold is removed by taking out -the bolt 2l connecting thearms =19 and 20. One of the bars I,3.may then be shiited relative to .the other .so as to remove the separating ribs 14 from between the spaced :or separated inner edges of .the boards23 ,of the spreader units 22. This will permit such units to be collapsed and when this is accomplished the side boards 21 of the core may then beseparated from .the wall and taken ,from the opening or passage Bil-which .has been formed in :the wall.

From thezforegoing description :it will bereadily .iapparent-that the core form of the presentinven- :tion :is .of relatively simple design and may be easily and quicklyset up andremoved from working position. At the same-time it will be apparent that the device may be constructed almost entirely from wood so that the use of valuable metal is to a great extent avoided.

I claim:

1. A core mold form of the character described. comprising a pair of relatively long, spaced, parallel members, a pair of units of substantially the same length as the members, designed to position against remote sides of the members, said units .beingdesignedfor adjustmentv as :to width, means iconnec'tingeach unit with aa member for maintaining the unit at a predetermined width, means for coupling said members together for relative movement, and side boards designed to be positioned upon opposite sides of the coupled members andwto bridge the space between adjacent sides of the two units.

'2. A core m'old'form, comprising two bar members arranged in spaced parallel relation, means coupling such members together for relative parallel movement, amair of spreader units "designed "to position against the remote sides of the bar members, said units each comprising two 'fiat members hingedly coupled together along two longitudinal edges :for adjustment to the form in :cross section. of a 'V., the :opposite longitudinal edges being disposed against "the adjacent bars, means carried by the bars for entrance between the flat members'to maintain the adjacent edges thereof separated, a board :overlying the bar members, :upon each side {and engaging against the adjacent unit members, and means forecouring the bar :members in-separated relation.

A core mold formas set forth in claim'Z, in which .the :said means carried by the bar members for entrance'between the-fiat members,-comprises an integral .-rib .formed longitudinally of the :remote faces of thebar members.

4. A core mold :form as set forth in claim 2, in which the thickness of the said opposite longitudinal edges of the flat members is such that the outer sides of such flat-members will extend beyond the adjacent side faces of the bar members against which they abut, :and said boards lying against the outer sides of the fiat members vat the said opposite longitudinal edges thereof.

5. A core mold v:form as set forth in claim 2, in which said bar members have their opposing .faces each provided with a longitudinal slot, and :the said couplingmeanscomprises a.-series of link bars having their ends disposed in said slots,

bars with the bar members.

'VERN n. REICHARD. 

